If all the rows and columns have the some number of blocks, then
(number of blocks in each row) times (number of blocks in each column)
must be a perfect square.
'121' is the only choice on the list that's a perfect square. It's the square of 11.
9/40 because when you put it in fraction form its 225/1000 then you simplify!
Answer:
the price was reduced by 28%
The greatest factor is 52 that is a prime number is 13.
